高速铁路复合地基褥垫层压实质量检测方法研究  

Study on the Compaction Quality Detection Method of the Composite Foundation Mattress Layer in High-speed Railway

作　　者：张守超 

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《铁道建筑技术》2017年第12期10-12,36,共4页Railway Construction Technology

基　　金：中国铁路总公司科技研究开发计划课题(2016G006-D)

摘　　要：针对复合地基褥垫层碎石压实质量检测方法中地基系数K30和压实系数K存在检测效率低、离散性大等问题,开展动态变形模量E_(vd)检测褥垫层碎石压实质量的相关研究。通过大量现场试验结果可知:动态变形模量E_(vd)与地基系数K30、压实系数K具有一定的相关性,并且在E_(vd)≥35 MPa时,基本达到《高速铁路设计规范》(TB10621-2014)中基床以下路堤K30≥130 MPa/m、K≥0.92的压实控制标准要求。因此,建议使用动态变形模量E_(vd)作为复合地基褥垫层压实质量检测方法,并将E_(vd)≥35 MPa作为其压实控制标准。During detecting the gravel compaction quality of composite foundation mattress layer,the foundation coefficient K30 and compacting factor K have such problems as low detection efficiency and large discreteness. In view of this,the paper carried out the related research about dynamic deformation modulus E_（vd） testing gravel compaction quality of mattress layer. In light of a lot of field test results,it shows that dynamic deformation modulus E_（vd） has a certain correlation with foundation coefficient K30 and compaction coefficient K. When E_（vd） reaches 35 MPa,K30 can get 130 MPa/m and K get 0. 92 from the standard of specification for design of high-speed railway（ TB 10621-2014）. Therefore,the dynamic deformation modulus E_（vd）is recommended as the compaction quality detection method of the composite foundation,and the E_（vd） should reach 35 MPa as the standard of compaction control.

关 键 词：高速铁路 复合地基 褥垫层 压实质量 控制标准 动态变形模量EVD 

分 类 号：U213.11[交通运输工程—道路与铁道工程]